Div introduction ersity index lab the measure of the biodiversity of organisms in a given area is known as the diversity index the diversity index values will vary between 0, which would indicate no diversity, and 1, which is. Species diversity lab celeste crispin october 25, - october 31, 2013 ap environmental science 2nd i background: species diversity in an ecosystem can be used as a gauge of the health of the ecosystem. Appreciation of this microscopic diversity is important to understanding why little things are such a big deal in this lab we'll examine plankton collected from our coastal waters. Parking lot ecology lab exploring biodiversity purpose: to develop an understanding of the shannon-wiener diversity index and species richness as tools for measuring biodiversity and to understand the.
Number of species represented in a given habitat but also how well each species is represented therefore, the method takes into account much more than just species richness the simpson's diversity value (d) ranges from no diversity at 00 to a maximum diversity at 10. Lab 3-1 species diversity lab it's a small world after all 1 background the diversity of species present in an ecosystem can be used as one gauge of the health of an ecosystem. Learn biodiversity lab with free interactive flashcards choose from 500 different sets of biodiversity lab flashcards on quizlet.
Species biodiversity lab purpose: to understand the importance of biodiversity, calculate the indices of the simpson's index, and quantify the biodiversity of a sample. Biol 113l evolution and diversity lab lab manual fall 2014 2 laboratory for the day cross out any unused parts of a page that precede the last entry. Lab on species diversity essay sample aim: to determine how moisture content of sand influences the distribution of fauna along a sandy beach materials: 100m transect,1m x 1m quadrat,shovel,30cm ruler,40cm x40cm sieve, digital probe, sweep net procedure.
Diversity maps of certain species groupings have been created in biodiversity mapping website: these species groupings include birds, mammals, amphibians, reptiles, fish and trees diversity in the usa include the total species richness, endemic species, threatened species, and small-ranged species. Effects of climate and landscape on species distributions and diversity phylogeographic studies examine the effects of historical landscapes and climates on intraspecific patterns of genetic structure, providing insight into the ecological and evolutionary processes involved in differentiation and speciation. Species, and the relative abundance of each species the number of species is known as the species richness it is simply the number of different species of organisms in the sample. Bee diversity if you are one of the many people who divide bees into honey bees and bumble bees, you might be surprised to learn there are almost 20,000 known species of bees in the world. The measure of the biodiversity of organisms in a given area is known as the diversity index the diversity index values will vary between 0, which would indicate no diversity.
Species diversity is a characteristic unique to the community level of organization the diversity of species within a given habitat is known as alpha diversity. Species diversity refers to the measure of diversity in an ecological community species diversity takes into consideration species richness, which is the total number of different species in a community it also takes into account evenness, which is the variation of abundance in individuals per species in a community communities with more species are considered more diverse than those with fewer. 1 -[(proportion of species a)^2 + (proportion of species b)^2 +] ∗addresses density and species richness in an order to balance the idea that diversity should include the. Data relating to the diversity of species and ecosystems datasets include not only species range maps, but also data on the land and seascapes which provide habitat for earth's diversity of life.
In species diversity is only affected by two processes, extinction and speciation, and the net balance between these two processes deter- mines whether diversity is increasing or decreasing on earth. Post lab questions— write out and answer the following questions 1 identify the parking lot that was the most diverse based on your observations during the lab, explain why your prediction in question #1 of the prelab was supported or not supported. 4/06 1 lab 9 calculating species diversity diversitythe health of a community is reflected by the number of species found in it, and the relative abundance of individuals within each species. Commonly used diversity indexes are: simpson's diversity index and shannon's diversity index simpson's diversity index ( d ) is based on the probability that two individuals chosen randomly from the same community belong to the same species.
At the regional scale diversity often increases due to introduction of new species, although work in our lab comparing invasions and extinctions in coastal ecosystems has shown that despite little change or even increases in total diversity, the composition of the biota has changed in important qualitative ways. Species richness (s) is a relative term that refers to the number of species in a community, and is directly associated with measuring the diversity of species in a given area a related term, evenness (e), is another dimension of diversity that defines the number of individuals from each species in. The main objective of this lab was to determine beaver (castor canadensis) food selection based on tree species, size, and distance since beavers are energy maximizers (jenkins 1980, belovsky 1984) and central place feeders (mcginley and whitam 1985), they make an excellent test animal for the optimal foraging theory. Simpson's diversity index is a measure of diversity in ecology, it is often used to quantify the biodiversity of a habitat it takes into account the number of species present, as well as the abundance of each species.
Diversity is the cornerstone of life on earth biodiversity is organized at various levels, from communities and constituent species to genomes and genes this diversity and its evolution are influenced by ecological opportunities and natural and sexual selection. The species name should never be used without its accompanying genus name, or at least the first letter of the genus our goal for both the course and for this lab is to appreciate the breadth and complexity of nature and to realize that humans are only a tiny component in the midst of a tremendous historical diversity of life forms. Evpp 111 lab spring 2004 1 biodiversity in leaf litter introduction species diversity is a characteristic that is unique to a.